Improved spring-bed bottom



FRANCIS B. MAT'ISN, F ROCKFORD, ILLINOIS.

' Lame Patent No. 87,184, dated Fama/ry 23, 1869.

IMIPROVED SPRINGBED BOTTOM The Schedule referred to in these LettersPatent and making part of the same.

To all whom 'it may concern:

Beit known that I, FRANCIS B. MAT'rsoN, of the city of Rockford, in thecounty of NVinnebago, and State of Illinois, have invented a new anduseful'SpringfBed Bottom; and I do hereby declare that the following isa full, clear, and exact description of the construction and operationof the same, reference being had to the annexed drawing, forming part ofthis specification, and to the letters of reference marked thereon.

In the drawing- Y Figure 1 is a top view of the complete bottom.

Figure .2 is the same, viewed on its edge.

Figures 3 and 4 show the wedge-piece.

A My invention has reference to the construction of A a spring-bedbottom, in which the elasticity is entirely derived from pieces of wood,and consists of certain combinations of devices hereinafter to be setforth.

In the drawing, a a are slats, or strips of lumber, secured by suitablebolts, c' i, to the wedge-shaped pieces c c, which are so formed as togive the pieces a a an elliptical curve, of any form desired.

A sufficient number of these springs is secured to the cross-bar m,which may then be placed in the frame A B, or may be placed in thebedstead, properly fitted for it, without the frame just mentioned.

The elliptical springs@ a', constructed as described, and secured .tothe lcross-bar m, may be stayed by one or more cross-straps, b b'.

In this invention, particular attention is asked to the followingpoints:

First, the object of this invention is to furnish a cheap and efficientspring-bed bottom, which shall dispense with the usual coiled springs,rubber elastic, Ste. To accomplish this, we fasten the slats a a tol thewedge-shapedblocks c c, which give them an elliptical formf. A suflcientnumber of these, secured to the cross-bar m, form the bed-bottom proper,though the cross-bars o o, either secured to the bedstead or to a framesupporting the springs, are needed to keep the ends of the springs fromsettling too far downward.

Second, to provide against the tendency of the slats to set, or remainpermanently bent downward by the supeiincumbent weight, we slot the endsof the slats for the bolts, so that, by simply loosing the bolts, andthe stay-straps b b', the slats can be turned over, and so made toanswer the purpose of a spring continually. Y Third, the wedge-shapedpiece c may have a pin, d, init, in addition to the bolt fi, which shallenter the slot of the Slat a, and thus keep the block from turningsidewise.

What l claim as my invention, and desire to secure by Letters Patent, isThe construction and arrangement of the slats a a',

with the ends slotted as described, the-Wedge-pieces c c, cross-bars m oo, and stay 11,-the Whole combined to form a spring-bed bottom,substantially as described.

FRANCIS B. MATTSON. Witnesses:

W. W. Bonson, Sums G. TYLER.

